Testing the Hypothesis of Modified Dynamics with Low Surface Brightness Galaxies and Other Evidence | Zendy

Stacy McGaugh | Zendy; W. J. G. de Blok | Zendy

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Testing the Hypothesis of Modified Dynamics with Low Surface Brightness Galaxies and Other Evidence

Author(s) -

Stacy McGaugh,

W. J. G. de Blok

Publication year - 1998

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/305629

Subject(s) - galaxy rotation curve , physics , astrophysics , surface brightness , modified newtonian dynamics , galaxy , gravitation , surface (topology) , astronomy , galaxy formation and evolution , geometry , mathematics

The rotation curves of low surface brightness galaxies provide a unique dataset with which to test alternative theories of gravitation over a large dynamicrange in size, mass, surface density, and acceleration. Many clearly fail,including any in which the mass discrepancy appears at a particularlength-scale. One hypothesis, MOND [Milgrom 1983, ApJ, 270, 371], is consistentwith the data. Indeed, it accurately predicts the observed behavior. We find noevidence on any scale which clearly contradicts MOND, and a good deal whichsupports it.Comment: Accepted for publication in the Astrophysical Journal. 35 pages AAStex + 9 figures. This result surprised the bejeepers out of us, to

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